---
title: radiusFormat
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4accelerationstructuremotioncurvegeometrydescriptor/radiusformat
---

# radiusFormat

Sets the format of the radii in the radius buffer.

## Declaration

```swift
var radiusFormat: MTLAttributeFormat { get set }
```

## Discussion

Discussion Defaults to  MTLAttributeFormatFloat. All keyframes share the same radius format.